All categories

2 years ago

Scientists hypothesize that prokaryotes evolved before eukaryotes because

Biology

1 answer:

DiKsa [7]2 years ago

4 0

Answer: e. prokaryotic cells lack nuclei.

Explanation: Prokaryotes are unicellular (single-cell) organisms that lack well developed cell internal membrane-bound structures or organelles. They do not have a nucleus but generally, they have a single chromosome that possess a double-stranded DNA located in an area of the cell called the nucleoid. Most prokaryotes have a cell wall outside the plasma membrane.

You might be interested in

Which of the following is an example of a beneficial mutation?

dybincka [34]

Answer:

1ST

PLEASE MARK AS BRAINLIEST ANSWER 

5 0

2 years ago

Explain how the terms atom, compounds, element, and molecules all relate to one another

Alex777 [14]

For starters, atoms are the basic building blocks of matter- they make up elements, molecules and compounds. Elements most often combine with other elements as compounds. Whilst molecules are particles found in both elements and compounds. I hope that wasn't too confusing, but bottom line is that they are all linked together in this way! Helpful? :)

7 0

3 years ago

In the 1950's, a young woman sued film star/director Charlie Chaplin for parental support of her illegitimate child. Charlie Cha

astraxan [27]

Complete question:

17. In the 1950’s a young woman sued film star/director Charlie Chaplin for parental support of her illegitimate child. Charlie Chaplin’s blood type was already on record as type AB. The mother of the child had type A (AO) and her son had type O blood (OO).

a. Complete a Punnett square for the possible cross of Charlie and the mother.

b. The judge ruled in favor of the mother and ordered Charlie Chaplin to pay child support costs of the child. Was the judge correct in his decision based on blood typing evidence? Explain why or why not. *refer to any Punnett squares to support your answer.

Answer:

The judge committed a mistake in his decision. There are no chances for this couple to have a child who has 0 blood type.

Explanation:

Available data:

Charlie Chaplin’s blood type was AB
The mother of the child had type A (AO)
The son had type O blood (OO).

Cross: Charlie Chaplin x The Woman

Parental) IAIB x IAi

Gametes) IA IB IA i

Punnett square) IA IB

IA IAIA IAIB

i IAi IBi

F1) 1/4 = 25% of the progeny would have IAIA genotype, blood type A

1/4 = 25% of the progeny would have IAi genotype, blood type A

1/4 = 25% of the progeny would have IAIB genotype, blood type AB

1/4 = 25% of the progeny wouldl have IBi genotype, blood type B

According to the results of the cross observed in the Punnett square, there are no chances for this couple to have a child who has 0 blood type.

Blood type 0 can only be produced by two recessive alleles i, one inherited from each parent. The mother could provide the recessive allele because she is IBi, but Chaplin could not pass to his progeny any recessive allele.

The judge committed a mistake in his decision.

6 0

2 years ago

According to scientists, ocean waves could be a source of energy. Devices are being designed to capture the energy from waves an

Vilka [71]

If we say something is beneficial, it must be positive and really mean to give advantage to one thing or another. Wave energy is a renewable energy since it can be used repeatedly over time without any problem on supply. Hence the greatest benefit it can give would be:

decreased use of nonrenewable resources

8 0

3 years ago

Native bumblebees live in grasslands and consume pollen and nectar from flowers. The bumblebees carry pollen from one plant to a

Fynjy0 [20]

Answer:

i think it's A. why? because bumblebees pollinate flowers making more grow but dragonflies EAT the bees so they'll decrease.

4 0

2 years ago